Using Microsoft Excel functions:
1. A machine will cost $50,000 to purchase. Annual operating cost will be $3,000. This machine will save $15,000 per year in labor costs. The salvage value after 5 years will be $10,000. Calculate the machine’s equivalent uniform annual worth (EUAW) for the interest rate of 8%.
Year | investment | Annual O&M | Annual savings | Salvage value | Net cash flow |
0 | -50000 | -50000 | |||
1 | -3000 | 15000 | 12000 | ||
2 | -3000 | 15000 | 12000 | ||
3 | -3000 | 15000 | 12000 | ||
4 | -3000 | 15000 | 12000 | ||
5 | -3000 | 15000 | 10000 | 22000 | |
NPV | 4718.35 | ||||
EUAW | 1181.74 |
Showing formula in excel
Year | investment | Annual O&M | Annual savings | Salvage value | Net cash flow |
0 | -50000 | =H2+I2+J2+K2 | |||
1 | -3000 | 15000 | =H3+I3+J3+K3 | ||
2 | -3000 | 15000 | =H4+I4+J4+K4 | ||
3 | -3000 | 15000 | =H5+I5+J5+K5 | ||
4 | -3000 | 15000 | =H6+I6+J6+K6 | ||
5 | -3000 | 15000 | 10000 | =H7+I7+J7+K7 | |
NPV | =NPV(8%,L3:L7)+L2 | ||||
EUAW | =PMT(8%,5,-L8) |
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